Compare 181 vs 187
Property | 181 | 187 |
---|---|---|
Type | prime | semiprime |
Unique factors | 1 | 2 |
Total factors | 1 | 2 |
Prime factorization | 1811 | 111 × 171 |
Prime factorization | 181 | 11 × 17 |
Divisors count | 2 | 4 |
Divisors | 1, 181 | 1, 11, 17, 187 |
Number of properties | 8 | 1 |
Centered square primes | 6th | |
Chen primes | 33rd | |
Dihedral primes | 5th | |
Long primes | 16th | |
Palindromic primes | 9th | |
Primes | 42nd | |
Pythagorean primes | 19th | |
Semiprimes | 61st | |
Twin primes (2nd member) | 13th | |
Roman numberals | CLXXXI | CLXXXVII |
Base 2 | 101101012 | 101110112 |
Base 3 | 202013 | 202213 |
Base 4 | 23114 | 23234 |
Base 5 | 12115 | 12225 |
Base 6 | 5016 | 5116 |
Base 7 | 3467 | 3557 |
Base 8 | 2658 | 2738 |
Base 9 | 2219 | 2279 |
Base 10 | 18110 | 18710 |
Base 11 | 15511 | 16011 |
Base 12 | 13112 | 13712 |
Base 13 | 10c13 | 11513 |
Base 14 | cd14 | d514 |
Base 15 | c115 | c715 |
Base 16 | b516 | bb16 |